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Organic silicon building waterproof coating and preparation method thereof

A technology of building waterproofing and silicone, which is applied in coatings and other directions, can solve the problems of poor stability of waterproofing agents, etc., and achieve the effects of enhancing waterproof performance, improving waterproof effect, and enhancing strength

Inactive Publication Date: 2021-06-29
浙江中天东方氟硅材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problem of poor stability of silicone waterproofing agent, the present invention provides a silicone-based building waterproof coating, which has good permeability, UV resistance, high and low temperature resistance, aging resistance and rain erosion resistance, and can be applied to buildings. Waterproofing of exterior walls, subways, tunnels, underground buildings, etc.

Method used

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  • Organic silicon building waterproof coating and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0020] A preparation method of organosilicon-based building waterproof coating,

[0021] 1) Preparation of silicone resin powder: Add 100 parts of water into a pressure-resistant container, then discharge the high boiling matter of the slurry (the bottom of the washing tower of the methyl chlorosilane monomer synthesis device with the ultrafine waste silicon powder, and recover valuable products by distillation Finally, the liquid high boilers that enter the slurry tank, the same below) are hydrolyzed by pressurized atomization treatment technology, and the specific operation is to charge nitrogen into a pressure vessel with 50 parts of slurry high boilers under stirring conditions, Keep the pressure in the container within the range of 0-0.6 MPa, atomize the gas through the nozzle, and spray it onto the surface of the water. During the hydrolysis process, add a certain amount of water to the reactor every 10 minutes to keep the concentration of acid water in the system. Keep ...

Embodiment 2

[0024] A preparation method of organosilicon-based building waterproof coating,

[0025] 1) Preparation of silicone resin: Add 100 parts of water in a pressure vessel, then hydrolyze the high boiling matter of the slurry using pressurized atomization treatment technology, the specific operation is to add 50 parts of high boiling matter of the slurry under stirring conditions Fill the pressure vessel with air so that the pressure in the vessel is in the range of 0-0.6 MPa. The gas is atomized through the nozzle and sprayed onto the surface of the water. During the hydrolysis process, a certain amount of water is added to the reactor every 30 minutes. Keep the acid water concentration of the system below 15%, and at the same time keep the stirring speed at 1500 rpm to obtain silicone resin with uniform particle size. After washing the silicone resin with water until the pH is less than 5, react with potassium hydroxide to obtain the corresponding After filtration, react the filt...

Embodiment 3

[0028] A preparation method of organosilicon-based building waterproof coating,

[0029]1) Preparation of silicone resin: Add 100 parts of water into a pressure vessel, then hydrolyze the high boiling matter of the slurry using pressurized atomization treatment technology. The pressure container is filled with a mixed gas of oxygen and argon with a volume ratio of 1:2 so that the pressure in the container is within the range of 0-0.6 MPa. The gas is atomized through the nozzle and sprayed onto the surface of the water. Add a certain amount of water to the reactor to keep the concentration of acidic water in the system below 15%, and at the same time keep the stirring speed at 1000 rpm to obtain silicone resin with uniform particle size. After the silicone resin is washed with water until the pH is less than 5, React with potassium hydroxide and sodium hydroxide at a molar ratio of 1:1 to obtain the corresponding alkyl silicon alkoxide, and after filtration, react the filtrate ...

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Abstract

The invention relates to the field of building waterproof coatings, and provides an organic silicon building waterproof coating in allusion to the problem of poor stability of an organic silicon waterproof agent. The organic silicon building waterproof coating comprises the following components in parts by mass: 30-50 parts of long-chain alkyl trialkoxysilane, 2-20 parts of silicon resin powder, 4-8 parts of an emulsifier, 0.5-5 parts of a film-forming agent, 0.5-3 parts of a thickener, 0.1-0.5 part of a defoaming agent and 29-63 parts of water. The silicon resin powder is introduced, so that the waterproof effect of the long-chain alkyl trialkoxysilane can be improved, and the strength of a polysiloxane waterproof film formed after crosslinking of the long-chain alkyl trialkoxysilane can also be enhanced. The waterproof coating has the excellent characteristics of ultraviolet resistance, high and low temperature resistance, aging resistance, good permeability and the like, can be applied to waterproofing of roofs, building outer walls, subways, tunnels, underground buildings and other places, and also has the advantages of safety, environment friendliness and the like. The invention also provides a preparation method of the organic silicon building waterproof coating.

Description

technical field [0001] The invention relates to the field of architectural waterproof coatings, in particular to an organosilicon-based architectural waterproof coating and a preparation method thereof. Background technique [0002] Since the 1980s, my country's new building waterproof materials have developed rapidly. Judging from the overall structural proportion of new waterproof materials in my country, asphalt-based waterproof materials are still the main ones, accounting for 80% of all waterproof materials, polymer waterproof membranes account for about 10%, waterproof coatings and other waterproof materials account for about 10% . [0003] Polyurethane and acrylic waterproof coatings for exterior walls of buildings on the market cannot withstand harsh external environments such as sun, rain, and ultraviolet radiation for a long time, and require repeated maintenance, which greatly increases labor costs and waste of resources. Silicone-based materials have excellent w...

Claims

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Application Information

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IPC IPC(8): C09D183/04C09D7/62
CPCC09D183/04C09D7/62C08L2205/025C08L83/04C08K9/04C08K3/346
Inventor 田春席先锋杨庆红陈荣雄金志军汪海风
Owner 浙江中天东方氟硅材料股份有限公司
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